20 Most Recent APC Back UPS 650 (APWBK650MC) UPS System Questions & Answers

Sounds like a charging problem.

APC Back UPS 650... | Answered on Aug 31, 2017

must be either low main power or cable damaged or not inserted properly

APC Back UPS 650... | Answered on Apr 05, 2013

manual above.

APC Back UPS 650... | Answered on Apr 28, 2010

Check the batteries first

APC Back UPS 650... | Answered on Mar 06, 2010

Yes you can change the battery. All you need to do is ensure that the replacement battery has the right physical size to fit in the cabinet and meets the required spec. Simply having a larger AH rating means that it will last longer under load when it is required and will take longer to charge after it has been used.

APC Back UPS 650... | Answered on Oct 19, 2009

Your inverter is blown on the ouput. If it is a 300VA get a new one, 3000VA, you will need a local UPS repar company.

APC Back UPS 650... | Answered on Sep 08, 2009

So your ups system does not work when it is relying on battery power? Then it most likely needs a battery replacement. http://www.batteryinternational.com/ups-batteries.html check out that site to find the battery replacement that will work with your system.

APC Back UPS 650... | Answered on Jul 02, 2009

Rao, there is an on/off button located somewhere on the exterior, they are usually flush with the case and push into the interior. A small led should light when turned on.
Hope this helps.

APC Back UPS 650... | Answered on Jan 30, 2009

If you wish to speed up the recharge time you will need to aquire a seperate charger for the 100 AH battery..make sure you use a blocking diode..to keep the two chargers seperate...if you need help on a diagram on how to do it let me know

APC Back UPS 650... | Answered on Dec 31, 2008

since the unit is not rusted ,its clear that it is OK!when battery leaks,it loses power,so is not harmfull to unit.replce the battery and keep rollin!

APC Back UPS 650... | Answered on Dec 28, 2008

need to checked by expert

APC Back UPS 650... | Answered on Jul 24, 2008

most need a battery , the #1 failure , for sure.
and fuses. all. (means breaker too, feed and in unit)
RTM yet at APC, they have manual and find 2000
that is what all techs do, as no 2 UPS are the same, so.........

APC Computers &... | Answered on Sep 24, 2019

Best thing about this new service is that you are HELP NUMBER +1 833 272 0777never placed on hold and get to talk to real repairmen in the US.

APC Computers &... | Answered on Mar 21, 2019

A UPS, it is. with battery.
2 new batteries fit in side, or it is 1 battery model and tried 1 battery new and then the next?
so all this is about a beeper too loud.

well with the line cord remove

and battery out, find the sonic beeper and see that hole there.
stuff chewing bump in that hole. ends that.
remove it.
tape it
or stuff gum ./clay or even rtv caulk in the hole to make it more quiet or zero sounds.

they do not let you change the threshold of the battery low warning, if you do that that wrecks the battery if too deeply discharge, (its lead acid gell cell and $20 every time you wreck it)

APC Computers &... | Answered on Mar 10, 2019

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